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Finding the Fourth Proportional to 113,954,789.04, 157,257,668 and 61,743,865.72

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Solution

The fourth proportional to 113,954,789.04, 157,257,668 and 61,743,865.72 is: 85,206,566.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,954,789.04 : 157,257,668 = 61,743,865.72 : x
  2. Step 2: Convert to fraction form
    113,954,789.04/157,257,668 = 61,743,865.72/x
  3. Step 3: Cross multiply
    113,954,789.04x = 157,257,668 × 61,743,865.72
  4. Step 4: Simplify right side
    113,954,789.04x = 9,709,696,336,432,340
  5. Step 5: Solve for x
    x = 9,709,696,336,432,340/113,954,789.04
  6. Step 6: Final answer
    x = 85,206,566.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.